1802: English physicist Sir Charles Wheatstone, who invented the resistive bridge circuit that eventually bore his name, was born. 1804: Joseph Priestley, discoverer elemental oxygen, ammonia, hydrochloric acid gas, carbon monoxide, sulfur dioxide, and oxides of nitrogen, was born. 1886: German chemist Clemens Winkler discovered the element germanium (named for Germania). 1895: Baseball's legendary home run hitter Babe Ruth was born in Baltimore, MD. 1959: The U.S. successfully test-fired for the first time a Titan intercontinental ballistic missile from Cape Canaveral. 1971: Astronaut Alan Shepard used a six-iron that he had brought inside his spacecraft and swung at three golf balls on the surface of the moon (video). 1998: Washington's National Airport's name was changed to Ronald Reagan Washington National Airport.